یک طرح حفاظتی فیوز - ریکلوزر مبتنی بر مشخصه زمان – جریان- ولتاژ در سیستم‌های توزیع شامل منابع فتوولتاییک

نوع مقاله: مقاله پژوهشی

نویسندگان

1 استادیار - دانشکده مهندسی برق، واحد نجف‌آباد، دانشگاه آزاد اسلامی، نجف‌آباد، ایران

2 کارشناس ارشد - مرکز تحقیقات ریزشبکه‌های هوشمند، واحد نجف‌آباد، دانشگاه آزاد اسلامی، نجف آباد، ایران

چکیده

استفاده از تولیدات پراکنده در سیستم توزیع منجر به بهبود پروفایل ولتاژ شبکه، بهبود کیفیت توان و ... می‌گردد. اما از طرف دیگر باعث ایجاد عدم هماهنگی بین تجهیزات حفاظتی بین می‌شود. در این مقاله یک مشخصه جدید زمان – جریان - ولتاژ به منظور حفظ هماهنگی فیوز - ریکلوزر ارائه شده است. این روش بر اساس اصلاح تطبیقی منحنی عملکرد سریع ریکلوزر متناسب با یک ترم ولتاژی که در حقیقت ضریبی از ولتاژ محل ریکلوزر در لحظه خطا بر حسب پریونیت می‌باشد، است. به کمک روش ارائه شده در لحظه وقوع خطا متناسب با محل خطا، شاخص اصلاحی مقدار ضریب تنظیم زمانی ریکلوزر محاسبه می‌گردد و سپس بر اساس این شاخص، ضریب تنظیم زمانی عملکرد سریع ریکلوزر به صورت تطبیقی اصلاح می‌شود و در نهایت زمان جدید زمان قطع ریکلوزر به‌منظور حفظ فیوز در این شرایط محاسبه می‌گردد. نتایج شبیه‌سازی بیانگر توانایی روش ارائه شده پیشنهادی در سناریو‌های متفاوت خطا، تغییرات ضریب نفوذ منابع فتوولتاییک می-باشد.

کلیدواژه‌ها

موضوعات


عنوان مقاله [English]

Adaptive Coordination of Fuse – Recloser in a Distribution System with High PV Penetration

نویسندگان [English]

  • Bahador Fani 1
  • Alireza Karbaschi 2
1 Assistant Professor/Najafabad Branch, Islamic Azad University
2 MSc - Department of Electrical Engineering, Najafabad Branch, Islamic Azad University, Najafabad, Isfahan, Iran
چکیده [English]

The use of Distributed Generations in the distribution system, has been lead to improve both network voltage profile and power quality. But it can probably create miscoordination between protective devices. In this paper a new Time – Curent – Voltage characteristic is presented in order to return coordination between fuse and recloser. This method is based on a adaptive modification of fast operation curve of recloser, which is related to a voltage term that is infact the Perunit voltage amplitude of recloser at fault accurance point. Based on the presented method, relate to the fault location, the Time Dial Setting (TDS) modification index (MI) is determined in fault location. Thus, according to this index, TDS of recloser fast operation is modified adaptively. Finally, new recloser trip time is calculated in this conditions for fuse saving. Simulation results show the performance of the proposed methods for both different types of fault scenarios and variation of PV penetration.

کلیدواژه‌ها [English]

  • Index Terms Distribution system
  • Fuse Saving Method
  • photovoltaic distributed resource
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